<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<link rel="stylesheet" href="css/07.css">
	<style>
		div{
			width: 400px;
	        height: 400px;
	        border: 1px solid #ccc;
		}
	</style>
</head>
<body>
	<div id="d1">div1
		<div class="c2">
			<div class="c1">div2</div>
		</div>
	</div>
	<br>
	<p id="p1">welcome to itany</p>
	<p id="p2">itany网博</p>

</body>
</html>